Question

Find the missing side. Round your answer to the nearest tenth.

Answer 1

5.4

Explanation:

ABC is a right angle triangle.

Therefore,

`cos \: (75) = (ab)/(ac)`

Plug the values

`cos \: (75) = (x)/(21)`

Apply cross product property

`x = 21 * cos(75)`

Calculate

`x = 5.435`

After rounding to the nearest tenth, the answer will be:

`x = 5.4`

Hope this helps...

Best regards!!